Hirado weather in December

In December, Hirado sees average daytime highs of 13°C and overnight lows near 9°C, with 73 mm of rain across 8.3 wet days and about 9.8 hours of daylight. It is the 10th-warmest and 11th-wettest month of the year here.

Highs ease over the month, from about 14°C in the first days to 11°C by the end. The sky is clear or mostly clear about 21% of the time in December, and the air most often feels dry.

Daylight stretches from about 10 hours at the start of December to 9 h 48 min by month's end. Set against the rest of the year, December is Hirado's 8th-clearest and 3rd-windiest month. For the whole year in context, see Hirado's year-round climate.

Daytime high
13°
10th warmest
Overnight low
3rd coldest
Rainfall
73 mm
8.3 wet days
Daylight
9 h 48 min
7:24 AM – 5:12 PM
Cloud cover
64%
8th clearest
Wind
19 km/h
3rd windiest
Solar energy
2.12 kWh/m²
Travel score
3.5
out of 10

Hirado is city in Nagasaki Prefecture, Japan.

Density
133/km²
people per km²
Founded
2005

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 14°C in the first days to 11°C by the end.

A typical December day in Hirado reaches about 13°C in the afternoon and slips back to 9°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 8°C and 17°C. Set against its neighbours, December runs about 5°C cooler than November and about 2°C warmer than January.

10°15°20°151015202531
Avg high (°C)Avg low (°C)
11511
21510
31410
41410
51410
61410
71410
8139
9139
10139
11139
12139
13139
14139
15128
16128
17128
18128
19128
20128
21128
22128
23128
24128
25128
26128
27117
28117
29117
30117
31117

How December really feels in Hirado

Once humidity and wind are folded in, December averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

December sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Hirado weather by month

How December compares with the rest of the year at a glance. December is the 10th-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan10° / 679.60.5102.3
Feb11° / 758.50.410.82.7
Mar14° / 12110.5011.74.0
Apr18° / 13°14210.3012.85.7
May22° / 17°1539.8013.76.5
Jun24° / 20°30214.6014.25.8
Jul28° / 24°27314.80145.2
Aug30° / 26°17113.6013.24.8
Sep27° / 23°18311.4012.26.3
Oct23° / 18°1047011.27.4
Nov18° / 13°948.2010.35.9
Dec13° / 738.309.83.5

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 21% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 20% of December, with mostly cloudy or overcast conditions the remaining 59%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14852
24951
34753
44753
54753
64555
74555
84357
94357
104357
114159
124258
134159
144060
154060
164060
173961
183862
193862
203862
213961
223862
233862
243862
253862
263961
273961
283961
293961
303961
313862

Chance of precipitation in December

Any precipitation

Hirado gets around 73 mm of rain over 8.3 wet days in December. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 27% and peaks near 29% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
129
229
329
429
529
628
728
828
927
1027
1127
1226
1326
1426
1526
1626
1725
1825
1925
2025
2125
2225
2325
2426
2526
2626
2726
2826
2926
3026
3126

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

Most of December feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, December lands in the dry band about 98% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
19442
29442
39541
49631
59631
69631
79721
89721
99721
109721
119820
129820
139820
149820
159910
169910
179910
189910
199910
209910
219910
229910
239910
249910
259910
2610000
2710000
2810000
2910000
3010000
3110000

Wind in December

Winds average 19 km/h in December.

Across December, daily wind ranges from about 18 km/h on the calmest days to 19 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202531
Wind speed (km/h)Feels
118light breeze
218light breeze
318light breeze
418light breeze
518light breeze
618light breeze
718light breeze
818light breeze
918light breeze
1018light breeze
1118light breeze
1218light breeze
1318light breeze
1418light breeze
1518light breeze
1618light breeze
1719light breeze
1819light breeze
1919light breeze
2019light breeze
2119light breeze
2219light breeze
2319light breeze
2419light breeze
2519light breeze
2619light breeze
2719light breeze
2819light breeze
2919light breeze
3019light breeze
3119light breeze

Sunrise & sunset in December

DaylightNight

Daylight runs from about 10 hours at the start of December to 9 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 12 minutes over December. Sunrise moves from 7:13 AM to 7:30 AM, and sunset from 5:10 PM to 5:19 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.07:135:10
29.97:145:10
39.97:155:10
49.97:155:10
59.97:165:10
69.97:175:10
79.97:185:10
89.97:195:10
99.97:195:10
109.87:205:10
119.87:215:11
129.87:215:11
139.87:225:11
149.87:235:11
159.87:235:12
169.87:245:12
179.87:245:12
189.87:255:13
199.87:265:13
209.87:265:13
219.87:275:14
229.87:275:14
239.87:285:15
249.87:285:15
259.87:285:16
269.87:295:16
279.87:295:17
289.87:305:18
299.87:305:18
309.87:305:19
319.87:305:19

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 2.12 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 2.12 kWh/m² to a high of 5.46 kWh/m² in May across the year — December's 2.12 kWh/m² sits near the bottom.

0123151015202531
Solar energy (kWh/m²)Level
12.3Moderate
22.3Moderate
32.2Moderate
42.2Moderate
52.2Moderate
62.2Moderate
72.2Moderate
82.1Moderate
92.1Moderate
102.1Moderate
112.1Moderate
122.1Moderate
132.1Moderate
142.1Moderate
152.1Moderate
162.1Moderate
172.1Moderate
182.1Moderate
192.1Moderate
202.1Moderate
212.1Moderate
222.1Moderate
232.1Moderate
242.1Moderate
252.1Moderate
262.1Moderate
272.2Moderate
282.2Moderate
292.2Moderate
302.2Moderate
312.2Moderate
Planning a trip in December

Hazard calendar for Hirado

In seasonPeak

In December, Hirado sits inside its pacific typhoon season. The full year is below, with each hazard's peak months called out.

Hirado sits in the Pacific typhoon belt; the season peaks July–October.

Hirado's rainy season runs April–September, when most of the year's rain falls.

Pacific typhoon
Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is December a good time to visit Hirado?

Our two travel scores rate December for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

3.5
Sightseeing
10th-best month of the year
0.0
Beach & pool
10th-best month of the year

December is a weaker month for outdoor sightseeing in Hirado.

What to pack for Hirado in December

From December's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In December, Hirado sees daytime highs around 13°C and nights near 9°C. Worth packing: a warm layer and rain gear. About 8 days see rain.

a warm layerrain gear

Sea temperature near Hirado in December

The nearest coast averages about 18°C in December — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in August at about 27°C and coldest in February near 15°C.

It's comfortable for a long swim from Jun 4 to Nov 24 — about 5.7 months when the water holds above 20°C.

15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan16Cool
Feb15Bracing
Mar15Bracing
Apr16Cool
May18Cool
Jun21Refreshing
Jul25Warm
Aug27Warm
Sep26Warm
Oct23Refreshing
Nov21Refreshing
Dec18Cool

UV index in Hirado in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 3. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Hirado peaks around July 18 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highModerateJul 18UV 10Dec 21UV 3
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar6High
Apr7Very high
May8Very high
Jun9Very high
Jul10Very high
Aug9Very high
Sep9Very high
Oct6High
Nov4Moderate
Dec3Moderate

Air quality in Hirado in December

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where December falls, not just the annual average.

Air quality in Hirado is worst in April — around 24 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (October, 11 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateModerateGoodModerateApr 1324 µg/m³Oct 1212 µg/m³
PM2.5 (µg/m³)Level
Jan16Moderate
Feb19Moderate
Mar23Moderate
Apr24Moderate
May21Moderate
Jun17Moderate
Jul12Good
Aug12Moderate
Sep12Good
Oct11Good
Nov14Moderate
Dec13Moderate
Location & terrain

Where is Hirado?

Hirado sits at 33.4°N, 129.6°E, 5 m above sea level, in Japan. The nearest listed city is Matsuura, 14 km away.

Topography around Hirado

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Hirado.

Within 3 km, the terrain around Hirado has only modest variations in elevation — a maximum elevation change of 243 m around an average of 33 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 542 m; within 80 km, large variations in elevation — a maximum elevation change of 1,046 m.

The land around Hirado is covered by water (46%) and trees (43%) within 3 km, water (62%) and trees (33%) within 16 km, and water (73%) and trees (21%) within 80 km.

3 km
243 m
16 km
542 m
80 km
1,046 m
treesgrasslandcroplandartificial surfaceswater
December weather nearby: Matsuura 14 km · Sasebo 27 km · Imarichō-kō 32 km · Arita 38 km · Karatsu 40 km · Saikai 44 km · Takeo 48 km · Iki 49 km

Japan travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type A / B
100 V · 50 / 60 Hz
Prices
≈ 65% of US
price level, 2025
GDP per capita
$35,951
2025
Happiness
6.1 / 10
World Happiness, 2025
Safe drinking water
99%
of population, 2024
Homicide rate
0.2
per 100k, 2023
Road deaths
3.6
per 100k/yr, 2019
Income group
High
World Bank
English
Very low
EF EPI 446
Religion
Shintoism 49%Buddhism 46%other 4%Christianity 1%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Hirado (33.3685°, 129.5525°, elevation 5 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).